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IRTC · iRhythm Holdings, Inc. · Held by Funds

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$124.08 +0.33 (+0.27%) Q2 2026 earnings call transcript
Russell 2000 member Rebalance outlook locked
Market Cap
$4.08B
Shares
32.96M
Volume · Oct 28 632.02K Avg daily vol (3M) 571.88K

Registered funds — mutual funds, ETFs and closed-end funds — whose latest Form N-PORT portfolio report holds this exact listed security, matched by CUSIP. Each row is one fund position with its size, value and weight in that fund.

Fund Ownership of IRTC by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 17.60% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 3.43% 1,131,941
Index ETFs 14.17% 4,670,534
Active ETFs 0.31% 101,294
Active funds 21.76% 7,172,964
Unclassified 0.39% 127,882
All registered funds 40.06% 13,204,615
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Funds holding IRTC

307 fund positions
Fund Balance Value % of Fund Open
VANGUARD TOTAL STOCK MARKET INDEX FUND 1,026,322 $122,081,002 0.01%
iShares Russell 2000 ETF 860,238 $102,325,310 0.12%
VANGUARD SMALL-CAP INDEX FUND 741,498 $88,201,187 0.05%
Eventide Gilead Fund 582,472 $69,285,044 2.01%
VANGUARD EXPLORER FUND 521,698 $61,127,355 0.28%
FULLERTHALER BEHAVIORAL SMALL-CAP GROWTH 447,100 $53,182,545 0.86%
Bridge Builder Small/Mid Cap Growth Fund 435,607 $51,815,453 0.46%
VANGUARD SMALL-CAP GROWTH INDEX FUND 427,292 $50,826,383 0.11%
Artisan Mid Cap Fund 378,618 $45,036,611 1.41%
VANGUARD EXTENDED MARKET INDEX FUND 377,971 $44,959,650 0.05%
Fidelity Small Cap Index Fund 361,729 $42,383,787 0.12%
SMALLCAP World Fund Inc 326,172 $38,798,159 0.04%
iShares Russell 2000 Growth ETF 305,804 $36,375,386 0.24%
Select Medical Technology and Devices Portfolio 280,000 $33,303,200 1.00%
Eventide Healthcare & Life Sciences Fund 277,739 $33,037,054 1.85%
Harbor Small Cap Growth Fund 230,080 $26,958,474 1.01%
JPMorgan Mid Cap Growth Fund 207,278 $24,655,718 0.19%
Oberweis Small-Cap Opportunities Fund 178,500 $21,232,575 0.75%
VANGUARD STRATEGIC EQUITY FUND 171,669 $20,420,028 0.17%
Columbia Acorn Fund 169,788 $20,196,283 0.73%
Fidelity Extended Market Index Fund 161,187 $19,171,582 0.05%
Select Health Care Portfolio 160,000 $19,030,400 0.28%
VANGUARD RUSSELL 2000 INDEX FUND 163,801 $18,656,934 0.11%
Schwab U.S. Small-Cap ETF 155,890 $18,541,557 0.08%
iShares U.S. Medical Devices ETF 153,887 $18,304,859 0.61%
JPMorgan Small Cap Growth Fund 140,843 $16,753,275 0.64%
MFS New Discovery Fund 133,178 $15,840,191 0.74%
Voya Small Cap Growth Fund 132,466 $15,755,506 0.74%
BARON DISCOVERY FUND 130,000 $15,463,500 0.85%
Loomis Sayles Small Cap Growth Fund 128,974 $15,341,457 0.68%
ALGER SMALL CAP FOCUS FUND 118,092 $13,836,840 1.62%
JNL Multi-Manager Small Cap Growth Fund 110,450 $13,138,028 0.52%
VANGUARD HEALTH CARE INDEX FUND 96,954 $11,043,061 0.06%
Fidelity Advisor Small Cap Fund 88,600 $10,538,084 0.44%
Allspring SMID Cap Growth Fund 79,806 $9,492,924 1.15%
Schwab Small-Cap Index Fund 80,448 $9,426,092 0.12%
Fidelity Advisor Health Care Fund 80,000 $9,373,600 0.30%
Fidelity Small Cap Growth Fund 79,354 $9,297,908 0.11%
VIP Contrafund Portfolio 67,500 $8,029,125 0.03%
Artisan Small Cap Fund 65,058 $7,738,649 0.81%
Fidelity Total Market Index Fund 63,518 $7,554,831 0.01%
Master Small Cap Index Series 60,932 $7,247,861 0.12%
JNL/JPMorgan MidCap Growth Fund 56,628 $6,735,901 0.19%
Principal U.S. Small-Cap ETF 56,554 $6,727,098 0.29%
VANGUARD STRATEGIC SMALL-CAP EQUITY FUND 55,543 $6,606,840 0.21%
American Beacon Stephens Small Cap Growth Fund 54,356 $6,465,646 1.17%
Fidelity Series Total Market Index Fund 51,667 $6,145,273 0.01%
NVIT Allspring Discovery Fund 47,775 $5,682,836 1.15%
ALGER WEATHERBIE SPECIALIZED GROWTH FUND 46,342 $5,429,892 2.28%
JPMorgan Small Cap Blend Fund 44,767 $5,325,035 0.31%
Showing 1–50 of 307 positions
Key facts CIK 1388658 CUSIP 450056106 13F (30d) 59 filings 54 filers Visit website Investor relations